When you turn it on, this message appears continuously: "Intel UNDI, PXE-2.0 (build 082) Copyright (C) 1997-2000 Intel Corporation For Realtek RTL8139 (X) / 8130 / 810X PCI Fast Ethernet Controller v.2.13 (020326) PXE-E61: Media test failure, checkcable PXE-MOF: Exiting PXE ROM " In the BIOS, in "Main" it says that there is no hard disk; and in "Boot" they leave by order from top to bottom: HDD CD / DVD FDD LAN I've tried to find a solution in other places, but I don't understand anything and I've thought that, better than with you, nowhere. I don't have much idea of informatica, so I would appreciate it if we went step by step. As a friend says: "Explain to me like I'm an idiot." I have also read that you remove the casing and check the connections and clean, but I have no idea how to open it, because after removing ALL Screws, it doesn't come out, and I'm afraid to force it. Many thanks note try to format it and everything but when you start installing windows the place where you select the partition to install win 7 bone does not appear it is as if it did not recognize it